structure of the plant cell is a little different from the cellular structures of the animal organism.This is primarily due to the way of life in a unique way plants and power - with a few exceptions all vegetable organisms are autotrophs and are capable of forming their own organic matter from inorganic.In most cases the organic elements are formed by photosynthesis.It is interesting that produce oxygen is the only byproduct of photosynthetic reactions.
plant cell: structure shell
presence of a solid cell wall - this is one of the characteristics of plant cells.Therefore consider the structure of plant cells is necessary with this component.This structure creates a mechanical protection around the protoplast.Furthermore, the wall is a kind of ion source, and an antibacterial barrier.The young cells can only be observed the formation of the primary shell.The main components of the structure are the fibers of cellulose, hemicellulose and pectin.As regards thickness, a different species, this figure will vary.
during the life of the cell wall may thicken.The formation of secondary and tertiary walls occurs by applying successive layers to the primary shell.Quite often, there is deposition of lignin or suberin in cavities between cellulose fibers - such a cell can not grow or expand.
structure of plant cells: the main elements of the protoplast
protoplast cell consists of a nucleus, cytoplasm and other organelles.It should be noted that the cell organelles may be separated into membrane and nemembrannye.
cytoplasm is a multi-component system, in which the main stages of the exchange and transport of substances.The substance of the cytoplasm contains a network of microfilaments - thin fibrous proteins that cause the movement of structures.Here there are microtubules and centrioles, which are involved in mitotic cell division.
Another group of important organelles - a ribosome, which is a nemembrannuyu structure.Each ribosome consists of small and large subunits.By and large, these organelles are nothing else than a complex protein elements and specific ribosomal RNA.Similar structures are involved in the synthesis of the protein.
structure of plant cells: characterization of membrane organelles
Most of the components of the plant cell consists of a membrane.
kernel - small spherical or elongated entity which consists of the nucleolus, nucleoplasm, chromatin and nuclear envelope.The main function of the nucleus - the transfer of genetic information, and RNA synthesis.
endoplasmic reticulum is a system of channels and cisterns.There granular EPS (its surface is covered with ribosomes) and smooth EPS.The function of this organelle is very diverse.It is synthesized on ribosomes protein components which were then tested modification of already inside tank EPS.Furthermore, the structure responsible for the transport of substances.
vacuole - membrane structure containing cell sap.This organelle maintains the osmotic balance and provides cell turgor.Moreover, inside the vacuole unwanted substances collected are then using the bubble ejected outside.Sometimes dissolved in the cell sap useful replacement material.
plastids - an integral part of the plant cell.In most cases, they are presented with chloroplasts.Plastids consist of two shells, the inner protrusion forming - thylakoids.It contains light-sensitive pigments.It was carried out in the chloroplasts so important processes of photosynthesis.
plant cell has other organelles - mitochondria is (responsible for cellular respiration), the Golgi apparatus (provides redistribution and transport substances within a cell).
However, the main structural features of plant cell visible - it has a strong cell wall and vacuole system plastids.
